Grain-door for cars



(No Model.) 2 Sheets-Sheet 1. E.A. BURRAGE.

GRAIN DOOR FOR GARS. No.,540,851. Patented. June 11,1895

(No Model.) 2 Sheets-Sheet 2.

E. A. BURRAGE. 5111.111 11003 FOR 011115.

No. 540,851. Patented June 11, 1895.

UNITED STATES PATENT OFFICE.

EDWIN A. BURRAGE, OF MINNEAPOLIS, MINNESOTA.

GRAIN-DOOR FOR CARS.

SPECIFICATION forming part of Letters Iatent N 0. 540,851, dated June11,1895.

Application filed September 20, 1894. Serial No. 523,550. (No model.)

To all whom, it may concern:

Be it known that I, EDWIN AIBURRAGE, a

- citizen of the United States, residing at Minneapolis, in the countyof Hennepin and State of Minnesota, have invented certain new and usefulImprovements in Grain-Doors for Cars; and I do hereby declare thefollowing to be a full, clear, and exact description of'the invention,such as will enable others skilled in the art to which it appertains tomake and use the same.

My invention relates to grain-doors for cars; and has for its object toprovide a graindoor of simple construction, which shall be eflicient andserviceable for the purposes had in view.

To this end my invention consists in the novel features of constructionhereinafter fully described, and defined in the claim.

My invention is illustrated in the accompanying-drawings, wherein, likeletters referring to like parts Figure 1 is a side elevation ofa part ofa car-body having my grain-door in working position thereon. Fig. 2 is ahorizontal section on the line X X of Fig. 1. Fig. 3 is an insideelevation of the door detached. Fig. 4 is a detail in inside elevationshowing the device for temporarily holding the door in position untilthe pressure of the grain becomes available thereon, and Fig. 5 is adetail looking at the same parts shown in Fig. 4. on the sectionline XX.

or represents the car-body and a the cardoor openings therein. To thedoor-posts a I fix angle-iron jams a to receive the ends of thegrain-door and prevent the lengthwise movement thereof when in workingposition.

The grain-door is composed of two sections 1) b, which are pivotallyconnected, on the center line of the door, by a three-leaf double willbe noted that the sections 0 c c of this hinge are secured together byvertical pivots, the centers of which are located inward of the leavesof said hinge and faces of the ing bar (1 carried by one of the doorsections and-having arms 01, which engage with suitable detents on theother door section. As shown, the bar 61 is mounted in staple-likekeepers d fixed to the door section b; and the transverse arms (1 are ofhook-like form, and the outer or angular portions thereof engage -withcorresponding stapledike keepers or detents d carried on the doorsection b. .When the door is in working position, as shown in Figs. 1and 2, the locking device above described, will hold the door sectionsrigidly to- .gether and in line with each other, with a ure of the grainbecomes available, bottom lugs f may be provided, in the form of rollersor otherwise, and top catches f may be pivoted to the door jambs ordoor-posts, and be made to engage with the upper edge of the door.Turn-buttons f may be provided, for holding the hook-like catches f inposition.

The locking-bar d is extended downward to a point near to but stoppingshort of the car floor, when in its locking position; and hence acrow-bar may be readily applied to raise the said bar, whenever desired,by using the threshold of the car-door opening as a fulcrum. To preventthe chafing of the door sections b b, by the sliding lock (1 d and theapplication of the crow-bar, the door sections are provided withvertical metallic strips or battens d Then the sliding bar at d israised to its uppermost position, it is of course obvious that the doorsections will turn freely on their central hinge, thereby permitting thecenter of the door to move outward,under the pressure of the grain fromwithin. Otherwise stated, the opening and removal of the graindoor willbe automatic when thelock is thrown into its releasing position.

When not in use, the two door sections may be folded together, so as tooccnpybut little ICO permanently attached grain-door.

The trussing-lock herein is similar in principle to the lock, for graindoors, disclosed in my pending application, Serial No. 506,231, filedMarch 3, 1894:, wherein broad claims to The said lock, as

the same will be found.

herein shown, however, Works as a part of a new combination which isherein claimed.

What I claim, and desire to secure by Letters Patent of the UnitedStates, is as follows:

The combination with the pair of door-sections, of the three-leaf hingesecured to the inside of said sections, overlapping the central joint,and constructed to permit the said door sections to be folded togetherbackward, and the vertical sliding lock, carried by one of saidsections, and provided with arms engageable with detents carried by theother of said sections, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

EDWIN A. BURRAGE. Witnesses:

J AS. F. WILLIAMSON, EMMA F. ELMORE.

